他们交往大概有一年了。They were knocking around together for about a year.因为不怎么懂意大利语，她很少和人交往。Since she knows little Italian, she keeps to herself.他们决定正式交往。They decided to put their relationship on a more formal footing....
缓慢的流速足以防止还原剂的散失.A low rate is enough to prevent flushing of reductants.还原的烟酰胺核苷酸对固态酶可以起还原剂的作用.Reduced nicotinamide nucleotides can function as reductants to nitrogenase.许多金属冶炼操作中需要碳作为还原剂.Carbon is needed as a reducing ag...
At pegmatite contacts the composition changes to chalcopyrite, millerite, pyrite, and accompanied by magnetite and hematite.在伟晶岩接触带,硫化物成分变为黄铜矿 、 针镍矿 、 黄铁矿及硫镍铁矿, 伴生有磁铁矿和赤铁矿....
He once again raised his baton and brought in the brass.他再次举起指挥棒，让铜管乐部加入进来。A loose brass knob on the bedstead rattled.床架上一个松动的球形铜扣发出嘎啦声。How did she have the brass to ask for more?她怎么有脸开口再要呢? She was clanging the brass be...
灯光照在满是灰尘的墙上，反射回苍白的冷光。Lights reflected off dust-covered walls creating a ghostly luminescence.需要保护你的手臂和双腿免受玻璃反射光线的照射。Your arms and legs need protection from light bouncing off glass.他用左手挡住反射过来的阳光。He used his left hand as ...